# US 11,441,060 B2 · Particulates for additive manufacturing techniques > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,060 B2 - Document ID: US11441060B2 - Status: Granted - Kind: B2 - Application number: 16/577,562 - Filed: 2019-09-20 - Published: 2020-02-20 - Granted: 2022-09-13 - Earliest claimed: 2015-08-10 - Assignees: Collins Engine Nozzles, Inc. - Applicants: Delavan Inc. - Inventors: John A. Sharon; Ying She; Tahany I. El-Wardany; Wayde R. Schmidt - Web page: https://patentgrep.com/patent/US11441060B2 ## CPC - C09K 5/14: Solid materials, e.g. powdery or granular - B22F 1/16: Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) - B22F 10/20: Direct sintering or melting - B22F 10/62: by chemical means - B23K 15/0086: {welding for purposes other than joining, e.g. build-up welding} - B23K 26/342: Build-up welding - B23K 35/00: Rods, electrodes, materials, or media, for use in soldering, welding, or cutting - B33Y 10/00: Processes of additive manufacturing - B33Y 70/00: Materials specially adapted for additive manufacturing - B33Y 70/10: Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials - B33Y 80/00: Products made by additive manufacturing - C23C 16/26: Deposition of carbon only - C23C 16/4417: {Methods specially adapted for coating powder} - C23C 16/442: using fluidised bed process - Y02P 10/25: Process efficiency - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A method of making a particulate for an additive manufacturing technique includes receiving particulate at a chemical vapor deposition (CVD) reactor, flowing a hydrocarbon gas into the CVD reactor, decomposing the hydrocarbon gas in the CVD reactor, and depositing a carbonaceous coating on the particulate using a product of the decomposed hydrocarbon gas. The coating deposited over the particulate has a reflectivity that is lower than the reflectivity the underlying particulate body to reduce an energy input requirement for purposes of fusing the particulate into a layer of an article using an additive manufacturing technique. In embodiments, the coated particulate can be received at an additive manufacturing apparatus and fused into a layer of an article as a metallic-carbon composite using a high-density energy source. ## Claims ### Claim 1 A method of making a coated particulate for an additive manufacturing technique, the method comprising: receiving particulate at a chemical vapor deposition (CVD) reactor; flowing a hydrocarbon gas into the CVD reactor; decomposing the hydrocarbon gas in the CVD reactor; and depositing a carbonaceous coating on a body of the particulate using a product of the decomposed hydrocarbon gas, wherein the carbonaceous coating has a reflectivity that is lower than a reflectivity of the particulate body to reduce an energy input requirement of the coated particulate to fuse the coated particulate into a layer of an article using an additive manufacturing technique, wherein the particulate body includes a first material and a second material separate from the first material, the first material having an electrical resistivity that is lower that an electrical resistivity of the second material, wherein the carbonaceous coating has an electrical resistivity that is lower than the electrical resistivity of the second material, wherein depositing the carbonaceous coating on the particulate includes depositing a carbonaceous layer including graphene on a surface of the particulate in the CVD reactor, and further including receiving coated particulate at an additive manufacturing apparatus, and fusing the coated particulate into a layer of an article using an external energy source. ### Claim 2 (depends on 1) The method as recited in claim 1, wherein the particulate body includes a metallic material. ### Claim 3 (depends on 1) The method as recited in claim 1, wherein the particulate body includes at least one of aluminum, copper, nickel, iron, titanium, molybdenum, alloys thereof, and ceramic. ### Claim 4 (depends on 1) The method as recited in claim 1, wherein the carbonaceous coating has an electrical resistivity that is lower than an electrical resistivity of the particulate body. ### Claim 5 (depends on 1) The method as recited in claim 1, wherein the carbonaceous coating has a thermal conductivity that is greater than a thermal conductivity of the particulate body. ### Claim 6 (depends on 1) The method as recited in claim 1, wherein the particulate body includes copper and phosphorus. ### Claim 7 A method of making a coated particulate for an additive manufacturing technique, the method comprising: receiving particulate at a chemical vapor deposition (CVD) reactor; flowing a hydrocarbon gas into the CVD reactor; decomposing the hydrocarbon gas in the CVD reactor; and depositing a carbonaceous coating on a body of the particulate using a product of the decomposed hydrocarbon gas, wherein the carbonaceous coating has a reflectivity that is lower than a reflectivity of the particulate body to reduce an energy input requirement of the coated particulate to fuse the coated particulate into a layer of an article using an additive manufacturing technique, wherein the particulate body includes a first material and a second material separate from the first material, the first material having an electrical resistivity that is lower that an electrical resistivity of the second material, wherein the carbonaceous coating has an electrical resistivity that is lower than the electrical resistivity of the second material, wherein depositing the carbonaceous coating on the particulate includes depositing a carbonaceous layer including graphene on a surface of the particulate in the CVD reactor, further comprising using the coated particulate in an additive manufacturing procedure. ### Claim 8 (depends on 1) The method as recited in claim 1, wherein an electrical resistivity of the carbonaceous coating is lower than an electrical resistivity of both the first and second materials of the particulate body.